kubectl的deploment命令详细

说明

Deployment是Kubernetes中用于管理Pod副本的对象，它可以创建、更新和删除Pod。Deployment通过控制器机制，保证在集群中的Pod始终达到所需的数量，并且能够自动地滚动更新到新版本。

语法

kubectl create deployment [name] [flags]

kubectl get deployment [name] [flags]

kubectl delete deployment [name] [flags]

kubectl rollout [status|history|undo] deployment [name] [flags]

kubectl scale deployment [name] --replicas= [flags]

kubectl edit deployment [name] [flags]

kubectl patch deployment [name] [flags]

常用选项

--image：指定Pod使用的镜像

--replicas：指定Pod副本数量

--namespace：指定命名空间

--dry-run：不执行，只输出生成的yaml文件

--record：记录操作历史

示例

1. 创建一个Deployment

kubectl create deployment nginx --image=nginx:latest

2. 查看Deployment

kubectl get deployment nginx

3. 更新Deployment

kubectl set image deployment/nginx nginx=nginx:1.19 --record

4. 查看Deployment状态

kubectl rollout status deployment/nginx

5. 查看Deployment历史

kubectl rollout history deployment/nginx

6. 回滚版本

kubectl rollout undo deployment/nginx

7. 编辑Deployment

kubectl edit deployment/nginx

8. 手动扩缩容

kubectl scale deployment/nginx --replicas=3

9. 删除Deployment

kubectl delete deployment/nginx

参考链接

https://kubernetes.io/docs/tasks/manage-deployment/deployment/